<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.red{
				color: red;
				
			}
			.size{
				font-size: 50px;
			}
			.under{
				text-decoration: underline;
				
			}
		</style>
	</head>
	<body>
		
		<p1 class="red size">段落1</p1><br />
		<p1 class="red under">段落2</p1><br />
		<p1 class="size under">段落3</p1><br />
	</body>
</html>
